diff --git a/src/Symfony/Component/Routing/RequestContext.php b/src/Symfony/Component/Routing/RequestContext.php
index 5e9e79d91680..cf7fd0985d8a 100644
--- a/src/Symfony/Component/Routing/RequestContext.php
+++ b/src/Symfony/Component/Routing/RequestContext.php
@@ -33,7 +33,7 @@ class RequestContext
     private string $queryString;
     private array $parameters = [];
 
-    public function __construct(string $baseUrl = '', string $method = 'GET', string $host = 'localhost', string $scheme = 'http', int $httpPort = 80, int $httpsPort = 443, string $path = '/', string $queryString = '')
+    public function __construct(string $baseUrl = '', string $method = 'GET', string $host = 'localhost', string $scheme = 'http', int $httpPort = 80, int $httpsPort = 443, string $path = '/', string $queryString = '', array $parameters = [])
     {
         $this->setBaseUrl($baseUrl);
         $this->setMethod($method);
@@ -43,6 +43,10 @@ public function __construct(string $baseUrl = '', string $method = 'GET', string
         $this->setHttpsPort($httpsPort);
         $this->setPathInfo($path);
         $this->setQueryString($queryString);
+
+        if ($parameters) {
+            $this->parameters = $parameters;
+        }
     }
 
     public static function fromUri(string $uri, string $host = 'localhost', string $scheme = 'http', int $httpPort = 80, int $httpsPort = 443): self
diff --git a/src/Symfony/Component/Routing/Tests/RequestContextTest.php b/src/Symfony/Component/Routing/Tests/RequestContextTest.php
index fcc42ff593a9..0f92c9af5d68 100644
--- a/src/Symfony/Component/Routing/Tests/RequestContextTest.php
+++ b/src/Symfony/Component/Routing/Tests/RequestContextTest.php
@@ -27,7 +27,10 @@ public function testConstruct()
             8080,
             444,
             '/baz',
-            'bar=foobar'
+            'bar=foobar',
+            [
+                'foo' => 'bar',
+            ]
         );
 
         $this->assertEquals('foo', $requestContext->getBaseUrl());
@@ -38,6 +41,20 @@ public function testConstruct()
         $this->assertSame(444, $requestContext->getHttpsPort());
         $this->assertEquals('/baz', $requestContext->getPathInfo());
         $this->assertEquals('bar=foobar', $requestContext->getQueryString());
+        $this->assertEquals(['foo' => 'bar'], $requestContext->getParameters());
+    }
+
+    public function testConstructParametersBcLayer()
+    {
+        $requestContext = new class() extends RequestContext {
+            public function __construct()
+            {
+                $this->setParameters(['foo' => 'bar']);
+                parent::__construct();
+            }
+        };
+
+        $this->assertEquals(['foo' => 'bar'], $requestContext->getParameters());
     }
 
     public function testFromUriWithBaseUrl()